Cladistics is one way scientists classify organisms. A cladogram shows the nature of evolutionary relationships that may have occurred, similar to a family tree. You will make a cladogram in this ...

The evolutionary history of freshwater fishes is a rich tapestry woven from both molecular and palaeontological threads. Over millions of years, diverse lineages have adapted to continental waters, ...

This is a comparative representation of waterbird endocasts (as viewed from the top of the brain) mapped onto a supertree of waterbirds. The supertree shows evolutionary relationships between ...